* {
    margin: 0;
    padding: 0;
    user-select: none;
}
body {
    background-image: linear-gradient(to right, #fbc2eb, #a6c1ee);
    position: relative;
    width: 100vw;
    height: 100vh;
}
.box {
    background-color: #fff;
    border-radius: 20px;
    min-width: 350px;
    min-height: 520px;
    max-height: 550px;
    height: 70vh;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
h3 {
    font-size: 40px;
    margin: 40px 0;
    text-align: center;
}
input {
    font-size: 25px;
    display: block;
    margin: 30px auto;
    padding: 10px;
    width: 70%;
}
.btn {
    margin: 30px auto;
    width: 75%;
    background-image: linear-gradient(to right, #a6c1ee, #fbc2eb);
    padding: 15px 0;
    text-align: center;
    border-radius: 8px;
    color: #fff;
}
.btn:hover {
    background-image: linear-gradient(to right, #b6d1fe, #ffc6ef);
}
.sign {
    margin-top: 100px;
    text-align: center;
}
.sign span {
    color: #0ed7f1;
}
.sign span:hover {
    color: #1ee7bb;
}
